CN112461937A - Fitting device for assisting in improving ultrasonic detection precision - Google Patents
Fitting device for assisting in improving ultrasonic detection precision Download PDFInfo
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- CN112461937A CN112461937A CN202011031721.0A CN202011031721A CN112461937A CN 112461937 A CN112461937 A CN 112461937A CN 202011031721 A CN202011031721 A CN 202011031721A CN 112461937 A CN112461937 A CN 112461937A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a fitter for assisting in improving ultrasonic detection precision, which comprises a chassis, a bearing type rolling and lifting device, an electronic lifting control device and a transducer fixing device, wherein the bearing type rolling and lifting device is arranged on the chassis; the chassis consists of four folded parts, and the four folded parts are connected by an I-shaped push fork rod component and used for adjusting the internal space of the chassis through the I-shaped push fork rod component and fixing the lower part of the ultrasonic transducer; the bearing type rolling and lifting device is connected with the four bevel parts of the chassis and used for driving the chassis to move in a rolling mode and executing the lifting action of the chassis under the control of the electronic lifting control device so as to adjust the distance between the lower surface of the ultrasonic transducer and the surface of the detection part; the transducer fixing device is connected with the chassis and used for fixing the peripheral side and the upper part of the ultrasonic transducer. The invention can make the main ultrasonic beam penetrate the couplant layer to minimize energy loss, make the defect reflected sound wave sensitive and realize accurate quantification of the internal defect of the metal component of the pipeline.
Description
Technical Field
The invention belongs to the field of ultrasonic detection, and particularly relates to a simulator for assisting in improving the ultrasonic detection precision.
Background
As one of the nondestructive testing fields, the ultrasonic testing technology is an efficient and convenient method for finding the internal defects of the materials, and is also one of the most widely applied technologies. In the case of utility boilers, almost 75% of the defects in the interior of the metallic parts of the pipes are detected by means of ultrasonic inspection techniques. At present, the development of a detection system composed of an ultrasonic instrument and a probe is very mature, and as for the detection system, the detection rate and the positioning and quantification of internal defects of common metal parts or metal parts of precision instruments are very accurate, but due to the influence of some external factors, for example: the roughness of the surface of the detection component, the coupling degree of the coupling agent and the component, the attenuation of the thickness of the coupling agent to the sound wave energy, the detection proficiency of personnel and other factors not only influence the efficiency of the detection process, but also influence the detection precision.
Combining the above factors, at present, the majority of detection personnel face a common problem: the sound velocity, zero position and refraction angle of the transducer are well adjusted by adopting a standard test block to the detection sensitivity and the like, and quantitative lines of defects during detection are well adjusted according to related standards. When the metal pipeline part is detected to find internal defects and is quantified, the wave height of the defect position is high and low when the internal defects appear, when a detector judges the internal defects, the wave height is different every time, the direct reason is that the contact problem between the transducer and the surface of the pipeline part is caused by the difference of force applied by the detector, theoretically, the thickness of the couplant layer is smaller, the smaller the couplant layer between the transducer and the pipeline part is, the transmission of sound waves is facilitated, and the higher the energy of reflected waves of the defects is, the more accurate the defect quantification is. When the couplant layer is thin enough, the couplant layer can not well contact with the surface of the transducer and the surface of the pipeline component, the air layer can be generated, the sound wave is completely reflected, and the defects can not be detected. According to the transmission theory, the thickness of the couplant layer can reach 1/2 integral times of the wavelength lambda of the transducer. At the moment, the most important point is to ensure that the thickness of the couplant layer when a standard test block adjusting instrument is adopted is the same as that after field detection, and simultaneously, the thickness of the couplant layer is ensured to be 1/2 integral times of the wavelength lambda of the transducer, so that the accurate quantification of the internal defects of the metal parts of the field pipeline can be realized. Therefore, an auxiliary device is urgently needed to solve such problems.
Disclosure of Invention
The invention aims to provide a fitter for assisting in improving ultrasonic detection precision, which is used as an additional device of an ultrasonic probe and is used for controlling and detecting the thickness of a couplant layer, so that an ultrasonic main sound beam penetrates through the couplant layer to minimize energy loss, a defect reflected sound wave is sensitive, and the precise determination of the internal defect of a metal part in a pipeline is realized.
The invention provides a fitter for assisting in improving ultrasonic detection precision, which comprises a chassis, a bearing type rolling and lifting device, an electronic lifting control device and a transducer fixing device, wherein the bearing type rolling and lifting device is arranged on the chassis;
the chassis consists of four folded parts, and the four folded parts are connected by an I-shaped push fork rod component and used for adjusting the inner space of the chassis through the I-shaped push fork rod component and fixing the lower part of the ultrasonic transducer;
the bearing type rolling and lifting device is connected with the four bevel parts of the chassis and used for driving the chassis to move in a rolling mode and executing the lifting action of the chassis under the control of the electronic lifting control device so as to adjust the distance between the lower surface of the ultrasonic transducer and the surface of the detection part;
the transducer fixing device is connected with the chassis and used for fixing the peripheral side and the upper part of the ultrasonic transducer.
Furthermore, the bottom of the bevel of the four bevel parts is provided with a transducer clamp for supporting the ultrasonic transducer so as to prevent the ultrasonic transducer from sliding downwards.
Further, the i-shaped push fork rod member comprises an i-shaped connecting rod and an i-shaped rod groove which are connected in a matched mode, and the i-shaped push fork rod member is connected with a disc type gear knob and used for driving the i-shaped push fork rod member to achieve distance control between the four folded parts through rotating the disc type gear knob so as to adjust the inner space of the chassis.
Further, bearing formula roll and elevating gear includes telescopic shaft, support frame, wheel shell, ball, lubricated pearl, telescopic shaft one end with the top of support frame is connected, the other end with the chassis is connected, the bottom of support frame with the wheel shell is connected, be equipped with in the opening of wheel shell lower extreme ball and lubricated pearl are used for through the roll execution movement action of ball, through the friction of ball and wheel shell is avoided to the lubricated pearl.
Furthermore, the electronic lifting control device comprises a lifting control switch and a distance sensor which are connected with the chassis, wherein the lifting control switch is connected with the distance sensor and the telescopic shaft through a lead and is used for controlling the lifting action of the telescopic shaft, and the distance between the lower surface of the ultrasonic transducer and the surface of the detection component is controlled through the distance sensor.
Furthermore, the transducer fixing device comprises a transducer fixing stand column, a transducer pre-tightening knob, a screw rod and a vertical rod groove, wherein the transducer fixing stand column is of an encircling structure formed by two U-shaped supports in a crossed mode, the vertical rod groove is formed in the line of the crossed position of the two U-shaped supports, and the transducer pre-tightening knob is used for fixing the upper portion of the ultrasonic transducer through the screw rod and the vertical rod groove.
By means of the scheme, the fitter for improving the ultrasonic detection precision in an auxiliary mode has the following technical effects:
(1) accurate quantification of part defect can be realized, the misjudgment that leads to because of the defect rating problem makes the part assess unqualified and lead to scrapping, reduces unnecessary economic loss for units such as power plant.
(2) The high efficiency of on-the-spot test work can be realized through bearing formula gyro wheel unique design, goes on in order, solves because of the weld on pipeline surface, the interrupt problem of the detection achievement that debris etc. brought, also can solve transducer surface wear too fast scheduling problem simultaneously, reduce cost improves the benefit.
(3) The chassis connecting components can realize effective connection of four parts of chassis components, and the space of the device can be reduced or enlarged according to different specifications of the transducers adopted in detection, so that the device can effectively fix the transducers.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Drawings
FIG. 1 is a schematic structural diagram of a fitter for assisting in improving ultrasonic detection accuracy according to the present invention;
FIG. 2 is a schematic (left) view of the internal connections of the chassis of the fitter of the present invention;
FIG. 3 is a schematic (right) view of the internal connections of the chassis of the fitter of the present invention;
FIG. 4 is a schematic view of the bearing type rolling and lifting device of the fitter of the present invention;
FIG. 5 is a schematic view of the electronic elevation control apparatus of the fitter according to the present invention;
FIG. 6 is a schematic view of the transducer fixture above the fitter of the present invention.
The labels in the figure are:
1-disc gear knob; 2-a lifting control switch; 3-a chassis; 4-the transducer fixes the pillar; 5-pre-tightening the knob by the transducer; 6-transducer fixture; 7-h-shaped rod groove; 8-i-shaped link; 9-a telescopic shaft; 10-a support frame; 11-a wheel housing; 12-a ball bearing; 13-a lubricating bead; 14-a distance sensor; 15-a wire; 16-a screw; 17-vertical rod groove.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 5, the present embodiment provides a fitter for assisting in improving the ultrasonic detection accuracy, which includes a chassis 3, a bearing type rolling and lifting device, an electronic lifting control device, and a transducer fixing device;
the chassis 3 consists of four folded parts which are connected by an I-shaped push fork rod component and used for adjusting the internal space of the chassis 3 through the I-shaped push fork rod component and fixing the lower part of the ultrasonic transducer;
the bearing type rolling and lifting device is connected with the four bevel parts of the chassis and used for driving the chassis 3 to move in a rolling mode and executing the lifting action of the chassis 3 under the control of the electronic lifting control device so as to adjust the distance between the lower surface of the ultrasonic transducer and the surface of the detection part.
The transducer fixing device is connected with the chassis 3 for fixing the peripheral side and the upper part of the ultrasonic transducer.
In the present embodiment, the bottom of the four corners is provided with a transducer clamp 6 for holding the ultrasonic transducer to prevent the ultrasonic transducer from sliding down.
In the present embodiment, the i-shaped fork rod member comprises an i-shaped link 8 and an i-shaped rod groove 7 which are connected in a matching manner, and the i-shaped fork rod member is connected with the disc type gear knob 1, so that the disc type gear knob 1 is rotated to drive the i-shaped fork rod member to realize the distance control between the four bending parts, so as to adjust the inner space of the chassis 3.
In this embodiment, the bearing type rolling and lifting device includes a telescopic shaft 9, a support frame 10, a wheel housing 11, a ball 12, and a lubricant ball 13, wherein one end of the telescopic shaft 9 is connected to the top of the support frame 10, the other end is connected to the chassis 3, the bottom of the support frame 10 is connected to the wheel housing 11, the lower end of the wheel housing 11 is open, and the ball 12 and the lubricant ball 13 are disposed in the opening, so as to perform a moving action by rolling the ball 12, and avoid friction between the ball 12 and the wheel housing 11 by the lubricant ball 13.
In this embodiment, the electronic elevation control device includes an elevation control switch 2 and a distance sensor 14 connected to the chassis 3, the elevation control switch 2 is connected to the distance sensor 14 and the telescopic shaft 9 through a lead 15 for controlling the elevation of the telescopic shaft 9, and the distance between the lower surface of the ultrasonic transducer and the surface of the detection component is controlled through the distance sensor 14.
In this embodiment, the transducer fixing device includes a transducer fixing column 4, a transducer pre-tightening knob 5, a screw 16, and a vertical rod groove 17, the transducer fixing column 4 is formed by two U-shaped brackets crossing to form an encircling structure, the vertical rod groove 17 is disposed along the crossing of the two U-shaped brackets, and the transducer pre-tightening knob 5 is used for fixing the upper portion of the ultrasonic transducer through the screw 16 and the vertical rod groove 17.
This supplementary fitness ware that improves ultrasonic detection precision has following technological effect:
(1) accurate quantification of part defect can be realized, the misjudgment that leads to because of the defect rating problem makes the part assess unqualified and lead to scrapping, reduces unnecessary economic loss for units such as power plant.
(2) The high efficiency of on-the-spot test work can be realized through bearing formula gyro wheel unique design, goes on in order, solves because of the weld on pipeline surface, the interrupt problem of the detection achievement that debris etc. brought, also can solve transducer surface wear too fast scheduling problem simultaneously, reduce cost improves the benefit.
(3) The chassis connecting components (I-shaped push fork rod components) can realize effective connection of the four parts of chassis components, and the space of the device can be reduced or enlarged according to different specifications of the transducer adopted in detection, so that the device can effectively fix the transducer.
The present invention is described in further detail below.
The invention is based on the purpose of improving the detection precision of the metal parts of the pipeline, the sensitivity of an adjusting instrument and the sensitivity of field detection are the same implementation standard, the condition that the error judgment of the internal defects of the parts is caused by the acoustic energy loss caused by the uneven thickness of a couplant layer in the detection process due to the difference of the operation maturity of detection personnel in two conditions is avoided, therefore, the fitter is designed, the base plate 3 of the fitter consists of four parts and is used for bearing the transducers, a transducer clamp 6 (an angle sheet) is arranged in each part of the base plate and is used for bearing the transducers and preventing the transducers from sliding downwards to play a role of fixing, each part of the base plate is connected through I-shaped push fork rod members (an I-shaped rod groove 7 and an I-shaped connecting rod 8), and the effective control of the distance between each part is realized by using a transmission mechanism of a. The lower part of the chassis is supported by a bearing type rolling and lifting device consisting of a telescopic shaft 9, a support frame 10, a wheel shell 11, a ball 12 and a lubricating ball 13, and the bearing type rolling and lifting device can play a supporting role and control the sliding and lifting of the whole device. The upper part is a part which is formed by a vertical rod groove 17 and a screw rod 16 and controls the transducer to move upwards, so that the transducer is fixed. The middle part is a lifting control device which is integrally formed by a lifting control switch 2 and a bearing type rolling and lifting device, and the effective control of the contact surface of the transducer and the part is realized.
The specific operation process is as follows: firstly, the distance between four parts of the chassis 3 is roughly adjusted according to the length and width of the transducer used for detection, so that the transducer can be roughly placed in the middle space, then the distance is accurately controlled by adjusting the disc type gear knob 1, the transducer is tightly attached to the chassis, the periphery is fixed and supported by a transducer clamp 6, then, through a control part formed by a vertical rod groove 17 and a screw 16, the upper transducer pre-tightening knob 5 is twisted to tightly fix the upper part of the transducer, the upper part, the lower part, the left part and the right part of the transducer are effectively fixed at the moment, then the lifting control switch 2 is rotated to adjust the most effective distance between the lower surface of the transducer and the surface of a detection part, through the operation, the thickness of the couplant layer is kept consistent with that of the couplant layer during field detection during instrument adjustment and calibration, and the detection process can be carried out, so that the detection result is more accurate.
According to the invention, the surface contact space between the transducer and the pipeline part is controlled by the electronic lifting control device, so that the part and the surface of the transducer are effectively contacted by using the couplant layer, the loss of the couplant layer on ultrasonic energy is minimum, the precision of on-site pipeline part internal defects is consistent with the precision of instrument adjustment, the precise detection of the defects is realized, and unnecessary economic loss of units such as a power plant and the like caused by component judgment failure due to wrong grading is avoided.
The invention realizes high-efficiency detection of parts by means of the rolling component part of the device, the moving device adopts the bearing type rolling part, the friction force between the surface and the plane can be effectively reduced, meanwhile, the couplant can also be used as a lubricant of the bearing type rolling part during detection, the effective sliding of the transducer part on the detection surface is realized, and the absolute control of the distance between the chassis and the detection surface through the lifting device can avoid unnecessary abrasion of the transducer, reduce the cost and improve the benefit.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A fitter for assisting in improving ultrasonic detection precision is characterized by comprising a chassis, a bearing type rolling and lifting device, an electronic lifting control device and a transducer fixing device;
the chassis consists of four folded parts, and the four folded parts are connected by an I-shaped push fork rod component and used for adjusting the inner space of the chassis through the I-shaped push fork rod component and fixing the lower part of the ultrasonic transducer;
the bearing type rolling and lifting device is connected with the four bevel parts of the chassis and used for driving the chassis to move in a rolling mode and executing the lifting action of the chassis under the control of the electronic lifting control device so as to adjust the distance between the lower surface of the ultrasonic transducer and the surface of the detection part;
the transducer fixing device is connected with the chassis and used for fixing the peripheral side and the upper part of the ultrasonic transducer.
2. The fitter for assisting in improving the accuracy of ultrasonic testing according to claim 1, wherein a transducer holder for holding the ultrasonic transducer to prevent the ultrasonic transducer from sliding down is provided at a bottom of each of the four bent portions.
3. The fitter for assisting in improving the accuracy of ultrasonic testing according to claim 1, wherein the drum-shaped fork rod member comprises a drum-shaped connecting rod and a drum-shaped rod groove which are connected in a matching manner, and a disc-type gear knob is connected to the drum-shaped fork rod member for controlling the distance between the four bending portions by rotating the disc-type gear knob to drive the drum-shaped fork rod member, so as to adjust the inner space of the chassis.
4. The fitter for assisting in improving the ultrasonic detection accuracy according to claim 1, wherein the bearing-type rolling and lifting device comprises a telescopic shaft, a support frame, a wheel housing, a ball and a lubricating ball, wherein one end of the telescopic shaft is connected to a top of the support frame, the other end of the telescopic shaft is connected to the chassis, a bottom of the support frame is connected to the wheel housing, a lower end of the wheel housing is open, and the ball and the lubricating ball are arranged in the opening and used for performing a moving action by rolling of the ball, and friction between the ball and the wheel housing is avoided by the lubricating ball.
5. The fitter for assisting in improving the ultrasonic detection accuracy according to claim 4, wherein the electronic elevation control device comprises an elevation control switch and a distance sensor connected to the chassis, the elevation control switch is connected to the distance sensor and a telescopic shaft through a lead for controlling the elevation of the telescopic shaft, and the distance between the lower surface of the ultrasonic transducer and the surface of the detection component is controlled through the distance sensor.
6. The fitter for assisting in improving the ultrasonic detection accuracy according to claim 1, wherein the transducer fixing device comprises a transducer fixing column, a transducer pre-tightening knob, a screw rod, and a vertical rod groove, the transducer fixing column is formed by two U-shaped brackets crossing to form an encircling structure, the vertical rod groove is formed along a line where the two U-shaped brackets cross, and the transducer pre-tightening knob is used for fixing the upper portion of the ultrasonic transducer through the screw rod and the vertical rod groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011031721.0A CN112461937B (en) | 2020-09-27 | 2020-09-27 | Fitment ware of supplementary ultrasonic detection precision that improves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011031721.0A CN112461937B (en) | 2020-09-27 | 2020-09-27 | Fitment ware of supplementary ultrasonic detection precision that improves |
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| Publication Number | Publication Date |
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| CN112461937A true CN112461937A (en) | 2021-03-09 |
| CN112461937B CN112461937B (en) | 2022-12-27 |
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| CN202011031721.0A Active CN112461937B (en) | 2020-09-27 | 2020-09-27 | Fitment ware of supplementary ultrasonic detection precision that improves |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5623107A (en) * | 1995-05-22 | 1997-04-22 | General Electric Co. | Wheel dovetail scanner |
| JP2017078673A (en) * | 2015-10-22 | 2017-04-27 | 株式会社東京エネシス | Probe holding jig |
| CN107991389A (en) * | 2017-12-01 | 2018-05-04 | 华中科技大学无锡研究院 | A kind of ultrasonic nondestructive testing device |
| CN109406633A (en) * | 2018-12-13 | 2019-03-01 | 北方民族大学 | A kind of mechanical structure fatigue damage detection device and application method |
| CN209745886U (en) * | 2019-04-19 | 2019-12-06 | 西南石油大学 | Handheld ultrasonic detection probe wheel loading device |
| CN211577064U (en) * | 2019-05-28 | 2020-09-25 | 中国计量大学 | Manual scanning device for ultrasonic phased array of polyethylene pipeline welded joint |
-
2020
- 2020-09-27 CN CN202011031721.0A patent/CN112461937B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5623107A (en) * | 1995-05-22 | 1997-04-22 | General Electric Co. | Wheel dovetail scanner |
| JP2017078673A (en) * | 2015-10-22 | 2017-04-27 | 株式会社東京エネシス | Probe holding jig |
| CN107991389A (en) * | 2017-12-01 | 2018-05-04 | 华中科技大学无锡研究院 | A kind of ultrasonic nondestructive testing device |
| CN109406633A (en) * | 2018-12-13 | 2019-03-01 | 北方民族大学 | A kind of mechanical structure fatigue damage detection device and application method |
| CN209745886U (en) * | 2019-04-19 | 2019-12-06 | 西南石油大学 | Handheld ultrasonic detection probe wheel loading device |
| CN211577064U (en) * | 2019-05-28 | 2020-09-25 | 中国计量大学 | Manual scanning device for ultrasonic phased array of polyethylene pipeline welded joint |
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| Publication number | Publication date |
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| CN112461937B (en) | 2022-12-27 |
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